Many discussion around noise, sensor, photomultiplier, and application are described inside the application note. Inside this application note you can find info around customization, photon, wavelengths, and light.

The application note tells us things related to light sensing applications, characteristics, sensitivity, and photomultiplier tubes. The following are grabbed from this application note:

How do you decide what detector to use for your light sensing application? The choices can seem overwhelming: photodiodes, phototransistors, photodarlingtons, photomultiplier tubes, photoresistors, integrated circuits, various hybrids and even thermopiles. This application note provides insights on selecting the best approach for your ultraviolet, visible and near-infrared light sensing applications.